RNI Flashback vs ComparePhotos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RNI Flashback
This app offers a unique approach to photo editing, simulating the behavior of traditional film rather than using pre-defined filters. It generates distinct editing options each time, allowing users to achieve a truly artistic and film-like aesthetic for their digital images.
- Deep photo editing
- Simulates real film behavior
- Generates unique editing options
- No pre-defined filters
- Artistic flair and film-like color harmony
- Uses real film data simulation
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This app is a pretty scientific experiment in deep photo editing. At RNI we wanted to make our photos look more special with less effort and more fun. So we created RNI Flashback — an app that works like film not like an app. Using Flashback is simple. You just press the button and it generates editing options for you. And then you choose the best one. Because you’re the boss. Unlike other apps, RNI Flashback has no pre-defined filters. Instead it mixes virtual 'chemicals' and creates a unique look every time you press the button. This transforms digital medium making it more true to life and more refreshing. Flashback is created for everyone. But professional photographers and aficionados familiar with shooting film will especially love it. Because Flashback works more like photographic film rather than like digital software. Unlike any other existing software, Flashback uses real film data and simulates the response of real film layers by light when processing digital colours. This results in a completely unique output which can't be achieved in traditional image editors with conventional tools. Some of its looks can be weird, some can render skintones too red. But some will be just absolutely fabulous, making for film-like colour harmony and colour separation, far beyond what’s achievable in any other piece of software you have ever tried. Experience RNI Flashback now. Bring custom artistic flair into your photos and never get bored again. -- #RNIFlashback Tag your photos with #RNIFlashback for a chance to get featured in RNI’s official newsletter, blog and Instagram @reallyniceimages. To find out more about RNI products please visit reallyniceimages.com
ComparePhotos
Easily find the best photo from similar shots. Browse your library, select multiple images, and compare them side-by-side with preserved zoom and crop. Delete, share, or organize unwanted pictures to keep your gallery tidy.
- Compare similar photos side-by-side
- Preserves zoom and crop during comparison
- Delete, share, or move photos
- Create and manage custom albums
- View photo metadata and location
- Privacy-focused, no tracking or servers
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ComparePhotos helps you pick the best shot from similar photos — quickly, clearly, and without distraction. SELECT AND COMPARE • Browse the library, filter by album or month. • Select several shots and review them one after another. • Zoom and crop stay put when switching, so details are actually comparable. • Tap left or right to move between the selected photos. SORT OUT • Keep the photo on screen and delete the rest of the selection. • Delete, share or move single photos into an album. • Create your own albums and remove photos from them. FULL SCREEN AND METADATA • Pinch-zoom, swipe to the next photo, swipe up for capture data and a map. • Photos only, no videos — the app is for sorting stills. PRIVATE • No accounts, no tracking, no servers of ours. Your photos stay on the device. ComparePhotos is for people who actively tidy their library and want one keeper from a burst.
Screenshots
Verdict
The clearest difference is price: ComparePhotos at Free against RNI Flashback's $3.99. ComparePhotos also leads on review sentiment (100% vs 57%) and update cadence (every 4 days vs every 2 months). RNI Flashback's advantage is iOS requirement (15.0 vs 18.2). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ComparePhotos is free to download; RNI Flashback costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RNI Flashback ships an update every 2 months, ComparePhotos every 4 days. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.
| Parameter | RNI Flashback | ComparePhotos |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.6 (264 ratings) — better | — |
| Positive reviews | 56.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 264 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 68 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | RNI | Christian Behrenbruch |
Customer experience
RNI Flashback
ComparePhotos
Bugs and requests
RNI Flashback
Reported bugs
9 issues- App crashes during photo rendering/export
- Saving to camera roll causes app freeze
- Photo picker crashes on iOS 12
- Burst photos cause rendering failure
- Advanced menu controls cut off on certain devices
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- Blank image preview on iPad when selecting from library
- App not compatible with latest iOS updates
- Highlight slider inaccessible on iPhone X
- White interface elements extend beyond screen boundaries
Requested features
14 requests- Save and reuse favorite filter presets across multiple photos
- Ability to adjust filter strength/intensity slider
- iPhone X and newer device screen support
- Landscape orientation mode
- Built-in camera to capture photos directly
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- Dark mode interface option
- Lightroom integration or desktop version
- Batch apply filters to multiple photos
- Swipe gestures to cycle through filters
- Filter naming and organization system
- Slideshow mode for filter variations
- Export to RNI Films app for further editing
- Raw file format support
- Global preference to disable grain and scratches by default
ComparePhotos
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RNI Flashback
No in-app purchases
ComparePhotos
No in-app purchases
Questions
Is RNI Flashback free?
Is ComparePhotos free?
Do RNI Flashback or ComparePhotos have ads?
Which is updated more often, RNI Flashback or ComparePhotos?
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